Best GAuth Authenticator Alternatives & Competitors in 2025

Open source implementation of the two-factor authentication HOTP and TOTP schemes.

Key FreeOTP features:

Open Source No Tracking Offline Functionality Compatibility

Google Authenticator is a multifactor app for mobile devices.

Key Google Authenticator features:

Enhanced Security Offline Access Compatibility Free of Charge

free

Verify your customers in under 15 seconds anywhere in the world with a cutting-edge SaaS & API platform for Identity Verification and AML/KYC compliance.

Key ComplyCube features:

AML & Sanctions Screening PEP Checks Negative Media Screening Watchlist Screening

Try for free freemium $0.1 (per credit)

Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...

Key Aegis Authenticator features:

Open Source No Ads or Tracking Secure Backup Options Import/Export Options

One app to quickly and securely verify your identity online, for all of your accounts.

Key Microsoft Authenticator features:

Enhanced Security Ease of Use Integration with Microsoft Ecosystem Push Notifications

andOTP is a two-factor authentication App for Android 4.4+.

Key andOTP features:

Open Source Offline Functionality User-Friendly Interface Backup and Restore Options

Simple 2FA Authenticator - Generate Two Factor Authentication tokens.

Key 2FAS features:

Enhanced Security User-Friendly Interface Offline Access Cross-Platform Compatibility

Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.

Key Authy features:

Multi-device synchronization Encrypted backups Offline usage capability Desktop app available

The Hardware Bitcoin Wallet.

Key Trezor.io features:

Security Ease of Use Multi-Currency Support Open Source

Open Source

The YubiKey is a one-time password device for secure login with two-factor authentication.

Key YubiKey features:

Enhanced Security Phishing Protection Ease of Use Compatibility

Two-factor authentication app for Yandex accounts and also other QR-code based 2FA.

Key Yandex.Key features:

Enhanced Security Easy Setup Cross-Platform Availability Offline Functionality

privacyIDEA is an enterprise ready, open-source multi factor authentication system.

Key privacyIDEA features:

Open Source Versatile Authentication Methods Scalability Integration Capabilities

Open Source

Location-based behavioral biometrics SDK and APIs for frictionless mobile identification verification and authentication.

Duo Mobile works with Duo Security's two-factor authentication service to make logins more...

Key Duo mobile features:

Security User-friendly Compatibility Push Notifications